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Refrigerator problem [message #370519] Sun, 18 September 2022 18:52 Go to next message
Bob Wheaton is currently offline  Bob Wheaton   United States
Messages: 23
Registered: February 2004
Location: New Brunswick, Canada
Karma: 0
Junior Member
Hi all,
Just getting ready to leave for the fall convention and discovered my Dometic 2652 fridge is not cooling .
the freezer seems to be feeezing however the lower section is 55'.
Has anyone had the same issue?
Thanks in advance,
Bob Wheaton

,


'78 GMC Kingsley
NB,Canada
Re: Refrigerator problem [message #370520 is a reply to message #370519] Sun, 18 September 2022 19:16 Go to previous messageGo to next message
cadelec is currently offline  cadelec   Australia
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
Senior Member
Not sure what fridge you have but we have an all electric and the freezer was warking but the fridge wasnt . in ours there is a fan that circulates cold air from the freezer section to the fridge bottom section this fan was not working maybe check if you have a similar setup

Trevor Brisbane Australia Siesta Koala 76 Edgemont (old Bobby Moores) 71 Cadillac Eldo Convert 58 Cadillac Eldorado Brougham Project
Re: Refrigerator problem [message #370523 is a reply to message #370519] Mon, 19 September 2022 09:26 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
Senior Member
Bob,
I almost hate to tell you this, but that is an absorption unit and most of those work by pulling heat out of the freezer part and using what absorption is left to cool the refrigerator section. Ergo, when cooling capacity is lost, it shows up first as warming of the warmer part.

If you have done all the other stuff like clean the burner and turn the box upside down for a day and those didn't get it, then you would seem to be limited to few choices. One of them is to install a rebuilt cooling unit (typically half the cost of new) or install a replacement.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: Refrigerator problem [message #370524 is a reply to message #370519] Mon, 19 September 2022 19:20 Go to previous message
Jess Bressi Cortez is currently offline  Jess Bressi Cortez   United States
Messages: 16
Registered: February 2014
Location: Orange County, CA
Karma: 0
Junior Member
Bob, assuming your rig is perfectly level for this exercise and you have also properly cleaned: (i) the burner orifice (which is a synthetic ruby BTW), (ii) the burner and (iii) the chimney all well, the chimney baffle is intact and not rusted away, and nothing changed in the venting of your frig like debris in the upper vent, try this progression:

1. If you haven't already, run it on AC shore power, not propane. Wait a day and then check your frig temp. If it works on AC, you've got an issue with your burner or venting. The baffles can rust away and prevent the burner heat from heating the Ammonia solution enough.
2. If AC doesn't cool the frig, unplug the thermistor from the control board (the thermistor on a Dometic is the wire clipped on a plastic clip on the rightmost cooling fin in the frig compartment). Run the frig on 120 V AC and see if the frig cools, if so, your thermistor is likely bad. There are aftermarket thermistors that are adjustable knobs and not the imprecise slider Dometic supplies or you can just replace it.
3. If #'s 1 and 2 above don't solve the problem, you may need a new cooling unit.
4. Rebuilt cooling units for your model are about $450 versus over $2,500 for a new frig. There are YouTube videos on how to R&R the cooling unit, it isn't difficult.
5. Several Amish companies make new or rebuilt cooling units and these companies are reputed to make superior units but I do not have any personal experience.

I had exactly the same problem with my Dometic several weeks ago and found that cleaning everything and replacing the thermistor did it for me. Before, I couldn't get the frig below 45 or 50, afterwards, minus 10!


Jess Bressi Orange County, CA 1972 and 1974 Cortez's 455's/3.70's/Patterson Q-Jets
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